Improved snap-hook



UNITED STATES PATENT OFFICE.

HENRY BRADBURY, OF BERLIN, ASSIGNOR TO NEAL, WILLCOX & CO., OF

soUTHINeToN,

CONNECTICUT.

IMPROVED SNAP-HOOK.

To all whom it may concern:

Be it known that I, HENRY BRADBURY, of Berlin, in the county of Hartford and State of Connecticut, have invented and made a certain new and useful Improvement in Snap-Hooks; and l do hereby declare the following to be a full, clear, and exact description of the said inventionLreference being had to the annexed drawings, making part of this specification, wherein- Figure l is a side view, With the snap and spring-barrel in section. Fig. 2 is a view at right angles to Fig. l, the spring-barrel being in section longitudinally. Fig. Sis adetached view ofthe spring and its barrel separately; and Fig. 4 is a section, showing a modification of the springibarrel.

Similar marks of reference denote the same parts.

Snap-hooks have heretofore been made with a snap or latch closing the open side of the hook, and the said latch has been operated by a curved spring riveted upon the interior of the hook, which is liable to rust and break.

i Another character of snap-hook has had a coiled spring within an opening near the joint of the snap; but there being an opening at the sides of the joint the spring-space sometimes becomes filled with iced or otherwise obstructed,so that the spring is injured or the snap will not open or close properly.

The nature of my said invention consists in a snap-hook formed with a cylinder that entirely iucloses the spring of the snap or latch, so that it cannot become obstructed or injured, and the snap or latch is forked and formed with circular plates covering the endsof the said cylinder and receiving the axis of the springbarrel,through which axis the spring operates to close the snap.

ln the drawings, a is the eye or loop for the strap or chain, b the hook, and c the snap or latch, all of any desired size or material. l is a cylindrical openin g transversely through the hook at the junction of the snap 5 and e e are the circular ends, standing as forks to the snap, as seen in Fig. 5, and these circular ends when the snap is in place, cover the ends ot' the cylindrical opening d.

QI is a coiled or helical spring contained within the cylinder d, one end of which spring is rigidly connected to the cylinder d, and the other or moving end acts to close the latch or snap against the point of the hook. The manner in which this spring t' is applied may be varied. In Figs. 2 and 3 I have shown one end of the spring passing into a notch in d, as at 2, and the other end as fastened in a notch at 3 in a small anged cylinder, o. Through this cylinder o is a square hole, and in one of the circular plates eis also a square hole, while in the other plate e is a round hole large enough to freely pass a squared axis, This axis 00 is entered through the round hole in c into the squared hole in o and turned to wind up the spring t', and then pushed through the squared hole inthe other plate c, so as to operate the snap. The ends of the axis .r are then cut ot'f and riveted up to complete the construction of the hook. In Figs. l and 4 the spring t' is applied in a similar manner, only circular Washers heilig employed instead of the cylinder o. The washer 4E has a round hole in its center, and the Washer a squared hole, so that the axis entering the same can be employed to Wind up the spring.

What I claim, and desire to secure by Letters Patent, is-

A snap-hook formed with a transverse cylinder or opening containing the spring, in combination with the snap or latch c and its end plates or fork e, inclosing the said transverse cylinder and composing the sprin g-joint of the snap, substantially as set forth.

In witness whereof I have hereunto set my signature this 31st day of May, A. D. 1866.

hi HENRY XS BEADBUEY.

mark.

Witnesses:

MrLo Horcrurrss, SAML. M. Scorri'. 

